Women's rights groups in Fiji have raised concerns about freedom of expression, saying they've been prevented from publishing newspaper advertisements which highlighting issues about the constitution review process.

In exposing a royal to ridicule in the name of press freedom, the Sun follows a fine tradition in British press history.

But what is striking today is that boundaries to press freedom are upheld by so-called liberals who profess to be progressive, yet are outraged that someone would dare publish photos of a prince's backside.

The upshot of the Harry debacle is that liberal campaigners are now explicitly calling for external regulation of the press.